Please don’t make so much noise.I a novel.
---Must I go to the gym three times a week? ---No, you ______. Twice a week is OK.
---Mary’s skirt is a real bargain.---_____ must be in a secondhand shop that she bought it.
I wasn’t aware of this before, but recent research _____ that eating too much fat can contribute to heart disease.
The volunteers will do _______ to help those injured in the earthquake.
The petrol in the car _____ on our way to the beach, so we had to walk there.